The July 20, 2011, article by Leung et al, entitled, “DDW 2011 cutting edge colonoscopy techniques - state of the art lecture master class - warm water infusion/CO2 insufflation for colonoscopy” (J Interv Gastroenterol 2011; 1:78–82), contained an error.
In figure 2, lower left panel, the legend was given as “Good prep” and should have been “Air method”. The corrected figure 2 is as follows:
Figure 2.
Most of the dirty water is in the suction bottle during insertion. Water exchange provides salvage cleansing of the colon.